Radiator fin for pipes



Nov. 6, 1951 F. G. BUONGIRNO RADIATOR FIN FOR PIPES Filed July 12, 1950 INVENTOR.

FRA /v/r s. uo/ve//e/vo Patented Nov. 6, 1951 UNITED STATES PATENT OFFICE? 2,574,142 RADIATOR FIN `Foa lPIPEs Frank G. Buongirno, Wallingford, Conn. Application July 12, 19.50, Serial No.'173,310

1 claim. l

'I'his invention relates to heat exchange appalratus and more particularly to a radial fin which A further object is to provide a device of the l" above nature which will be simple in construction, inexpensive to manufacture, easy to install and manipulate, compact, ornamental in appearance, and very efficient and durable in use.

With these and other objects in view, there have been illustrated on the accompanying drawing two forms in which the invention may conveniently be embodied in practice.

In the drawing,

Fig. 1 is a view in elevation showing the first form of the improved radiator iln as it would appear when in operating position upon a pipe, the latter being shown in cross-section.

Fig. 2 is a cross-sectional view of the same, taken on the line 2-2 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a fragmentary cross-sectional view showing the original tapered shape` of the collar portion before the radiator n is fully clamped on the pipe.

Fig. 4 is a perspective view showing a second form of the radiator fin of rectangular shape, 'as it would appear when fully assembledlupon a pipe.

Referring now to the drawing, in which like reference numerals denote corresponding parts throughout the several views, the rst form of the improved radiator n comprises a pair of substantially semi-circular generally fiat, arcuate body sections I0, II, each of which extends through substantially more than 180 degrees so that said body sections may be assembled in overlapping relationship to provide a continuous annular fin.

The body section I has end portions I2, I3 which are adapted to overlap corresponding end portions I4, I5 of the body section II, the end portions I3 and I5 being provided with single apertures to receive a cotter pin I6 for swingably connecting the body sections I0, II together.

As a means for holding the body sections I0, I I 'in embracing relationship about a pipe P, the end portion I2 is provided with a plurality of apertures l1, and the end portion I4 is provided with a plurality of apertures I8, said apertures being so arranged that a cotter pin I9 may be engaged through two of said apertures selectively holding the body sections I0, II in snugly embracing relationship about diierent sizes of pipe.

In order to provide efficient heat transfer between the pipe P and the body sections I0, Il, the inner edges of the respective body sections are provided with substantially concentric curved V flanges 20, 2| which are tapered in their original form, as shown in Fig. 3, but which are adapted to be deflected into cylindrical shape when the body sections I0, Il are fastened about the pipe P, so that said flanges will have eilicient resilient, heat-conducting engagement with the outer surface of the pipe, as shown in Fig. 2, for example.

The tapered flanges 20, 2I extend around a majorportion of the inner edges of the body sections IIJ, Il, but terminate short of the overlapping end portions I2 and I5 respectively, so as to avoid interference with each other when in as'- 'sembled relationship upon the pipe.

It will be noted that this shortened formation of the flanges 20, 2I provides notches 22, 23 respectively, which will afford clearance for the flanges 20, 2|, and thus will permit thebody section I0 to be assembled in either overlapping or yunderlapping relationship with respect to the body section I I.

The improved radiator fin may be made of any suitable heat conducting sheet material such as tin, mild steel, copper or aluminum, and is preferably provided with a plurality of radial stiffening ribs 24 forreinforcing the body sections lo, The un may also be plated with nicke or chromium, if desired.

Second form The second form of the invention shown in Fig. 4 comprises a pair of at rectangular body sections 25, 26 having end portions 21, 2B, and 29, 30. respectively, which are adapted to overlap each other when said body sections are applied to the pipe P, thus providing a iin which is generally square in outline. The body sections 25, 26 are otherwise similar to the body sections I0, I I of the first form of the invention in all material respects, and have a pair of initially tapered flanges 3 I, 32 integrally formed therewith for providing efficient heat-conducting engagement with the pipe P.

The overlapping flat end portions 28 and 30 are provided with single apertures for a cotter pin Il for swingably connecting the body sections Il. It together.

The overlapping end portions 2l and It are provided respectively with a pair oi' apertures I4 and a pair oi apertures Il which are so arranged that a cotter pin It may be engaged selectively therethrough for holding the body sections Il. Il in ilrm embracing relationship upon Pipes of diilerent sizes.

Operation The body sections Il, il will be swingably connected prior to use by means of the cotter pin Il. This may be done either by the manufacturer or by the user. When the radiator iin is to be applied to the pipe P, it will merely be necessary to swing the body sections Il. il together in such a manner that the tapered ilanges Il, 2l will loosely embrace said pipe.

The body sections Il, Il, will then be prsed farther toward each other with suilicient force to insure that the nanges 2l, 2l make eiiicient heat-conducting contact with the pipe P, and assume a cylindrical curvature. The sections il, Il will then be secured in rigid relationship by inserting the cotter pin Il in the appropriate apertures I 1, Il and fastening 'said cotter pin in place by bending the prongs thereof outwardly.

It will be understood that the pair of apertures I1, Il will permit the ilat body sections il, II to be ilrmly attached to pipes of dierent sizes and that the deformable characteristics oi the flanges 2l. 2| will be an important factor in securing eilicient heat-conductive contact between the i'in and the pipe, even though small variations in the size of the pipe may occur.

The body sections 2l, Il of the second form will be assembled in the same manner, the cotter pin lt being inserted through the appropriate apertures Il, 3l for holding said body sections in place.

The invention herein disclosed will be found useful for increasing the radiating capacity of any exposed pipe, and when applied in suitable numbers will furnish a radiator capable oi heating a room or space of substantial size.

One advantage of the invention is that the individual radiator ilns may be readily attached to or removed from the pipe, thus permitting the effective radiation ot the pipe to be adjusted as desired alter the pipe has been installed.

Whiletberehavebeendiacioeedinthisspeoilication two iorms in which the invention may be embodied, it is to be understood that these forms are shown for the purpose of illustration only and that the invention is not to be limited to the speciilc disclosur, but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all the modiiications and embodiments coming within the scope of the following claim.

Having thus fully described the invention. what is claimed as new, and for which it is desiredtosecureIettersPatent,is:

In a radiator nn, the combination comprising a pair of nat separable body sections having arcuate inner edges adapted to be disposed con centrically with a common axis, said body sections extending radially trom said axis and having diametrically opposed pairs oi abutting. overlapping end portions. a pair of inner arcuate iianges extending laterally from said inner edges and initially tapered inwardly towards said axis. said nanges being deformable in an outward direction, said body sections being provided with radially extending reinforcing ribs, means comprising a pivot device for swingably connecting together one of said pairs of overlapping end portions, a plurality oi' apertures in the other oi said pairs of overlapping end portions, and a pin adapted to be selectively engaged in said apertures for iirmly securing said body sections in assembled relationship upon a pipe, whereby said flanges will assume a cylindrical shape and estabusn neat conducting contact with the pip' when said body sections are compressed thereon.

FRANK G. BUONGIRNO.

REFERENCES CITED The following references are of record in the ille of this patent:

UNri'sn s'ra'ras PATENTS Number Name Date 424,748 Wolf Apr. l, 1890 1,782,260 Pranquet et al. Nov. 18, 1930 FOREIGN PATENTS Number Country Date 19,447 Great Britain Oct. 3l. 1890 

